Tissue expression profile of PLP2 by multi-tissue RT-PCR. Total cellular RNA (0.5 μg) from various human tissues (Clontech) was RT-PCR amplified using a One-step RT-PCR kit (Qiagen) and the products resolved on 2% agarose gel. GAPD was used as internal control for sample normalization. The products of the PLP2 and GAPD amplicons are indicated by arrows and were confirmed by sequencing.